- R package [SmallCountRounding](https://CRAN.R-projects.org/package=SmallCountRounding) can be used to protect frequency tables by rounding necessary inner cells so that cross-classifications to be published are safe.

- R package [SmallCountRounding](https://CRAN.R-project.org/package=SmallCountRounding) can be used to protect frequency tables by rounding necessary inner cells so that cross-classifications to be published are safe.